Category talk:Drilling rig operators

Is it ok to include former operators in this category that have merged or no longer exist? Orniphobe (talk) 16:17, 10 December 2007 (UTC)

Maersk Drilling
Why Maersk Drilling is not on the list? — Preceding unsigned comment added by 193.163.248.12 (talk) 11:29, 28 July 2011 (UTC)